/Engine/Plugins/Experimental/LearningAgents/Source/LearningAgentsTraining/Public/LearningAgentsTrainer.h
Call this function when it is time to evaluate the rewards for your agents. This should be done at the beginning of each iteration of your training loop after the initial step, i.e. after taking an action, you want to get into the next state before evaluating the rewards.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="LearningAgents") void EvaluateRewards()